Given:
The composite figure consists of a rectangle and a semi-circle
The area of the figure = area of the rectangle - area of the semi-circle
The area of the rectangle:
Length = 9 cm
Width = 3 cm
Area = length x width = 9 x 3 = 27 cm²
Area of the semi-circle:
Radius = 3/2 cm
Area =
![(1)/(2)\cdot\pi\cdot r^2=(1)/(2)\cdot3.14\cdot((3)/(2))^2=3.5325\operatorname{cm}^2]()
So, the area of the figure =
Rounding to the nearest half unit
So, the answer will be the area = 23.5 cm²